1. Magnetic examinations of electrical and mechanical cardiac activity;Maniewski,1987
2. Simultaneous mechanograms and electrograms from the intact human subject, with notes on the effects of distention of the stomach on the conventional electrocardiogram: preliminary report;Johnson;Am Heart J,1940
3. Ballistocardiography: past, present and future;Goedhard;Bibl Cardiol,1979
4. Direct body ballistocardiography: a 25 year survey. Landmarks in its representation of cardiac dynamics;Winer;Bibl Cardiol,1979
5. High-frequency (acceleration) direct body ballistocardiography. Representation of the carotid pulse, phono- and apex-cardiogram in the BCG;Winer;Bibl Cardiol,1975